Structure
SQLConstraint
An expression representing the combination of a constraint name and algorithm for table constraints.
struct SQLConstraintOverview
See SQLTableConstraintAlgorithm.
Topics
Initializers
Instance Properties
var algorithm: any SQLExpressionThe constraint’s algorithm.var name: (any SQLExpression)?The constraint’s name, if any.
Instance Methods
func serialize(to: inout SQLSerializer)Invoked when a request is made to serialize the expression to raw SQL.
Relationships
Conforms To
SQLExpressionSwift.SendableSwift.SendableMetatype
See Also
Basic Expressions
struct SQLAliasEncapsulates SQL’s<expression> [AS] <name>syntax, most often used to declare aliaed names for columns and tables.struct SQLBetweenAnSQLExpressionwhich constructs SQL of the form<operand> BETWEEN <lowerBound> AND <upperBound>.struct SQLColumnAn expression representing an optionally table-qualified column in an SQL table.enum SQLDataTypeRepresents a value’s type in SQL.enum SQLDirectionDescribes an ordering direction for a given sorting key.struct SQLDistinctAn expression representing the subexpression of an aggregate function call which specifies whether the aggregate groups over all result rows or only distinct rows.enum SQLForeignKeyActionAn expression specifying a behavior for a foreign key constraint violation.struct SQLNestedSubpathExpressionA “nested subpath” expression is used to descend into the “deeper” structure of a non-scalar value, such as a dictionary, array, or JSON value.struct SQLQualifiedTableAn expression representing an optionally second-level-qualified SQL table.struct SQLQueryStringAn expression consisting of an array of constituent subexpressions generated by custom string interpolations.